Coming together

It seems people want to come together and be with others. Sure this was a T-moble commercial and that's probably how they got people there. But this is beautiful.

UPdate: here's what I've found out:

The exclusive 4 minute extended version of the moment 13,500 people spontaneously sang Hey Jude together in Trafalgar Square. Everyone involved arrived thinking they could be dancing - no-one had any idea how the event would unfold.